CN211396285U

CN211396285U - Round anchor assembly

Info

Publication number: CN211396285U
Application number: CN201922223872.5U
Authority: CN
Inventors: 焦景有; 焦德库; 焦乐乐; 焦玉鹏; 马喜庆
Original assignee: Henan Xinrong Heavy Industry Co ltd
Current assignee: Henan Xinrong Heavy Industry Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-09-01
Anticipated expiration: 2029-12-12

Abstract

The utility model relates to a cleaner production technical field discloses a round anchor subassembly, and it is including being cylindric round anchor and the fastener that is used for centre gripping steel strand wires, has seted up first through-hole along its axial lead direction on the round anchor, and the fastener tight fit is in first through-hole. The utility model has the advantages that: the fastener clamped on the steel strand is arranged in the first through hole, the steel strand deforms after tensile stress is applied to the steel strand, and the fastener is clamped in the first through hole, so that the steel strand is prevented from resetting, and the damage of the tensile stress on the steel strand is reduced.

Description

Round anchor assembly

Technical Field

The utility model relates to a cleaner production technical field, especially a round anchor subassembly.

Background

The prestress tensioning is to apply tension in advance in the member, so that the applied prestress tensioning member bears compressive stress, and further generates certain deformation to deal with the load borne by the structure, including the load of the self weight of the member, wind load, snow load, earthquake load action and the like; generally, steel strands, jacks and prestressed anchors are used for tensioning; before the engineering structural member bears external load, pre-tensioning stress is applied to the steel strand in the tension module, so that the bending resistance and rigidity of the member are improved, the time for crack occurrence is delayed, and the durability of the member is improved; in the mechanical structure, the stress is generated in advance, and the advantages of the mechanical structure are that the rigidity of the structure can be improved, the vibration and the elastic deformation are reduced, the elastic strength of the tension module can be obviously improved, and the original resistance is stronger.

The prestressed anchorage device is widely applied to project engineering such as highway bridges, railway bridges, urban overpasses, urban light rails, high-rise buildings, water conservancy and hydropower dams, ports and docks, rock slope protection anchoring, foundation reinforcement, tunnel mine roof anchor tops, prestressed net frames, subways, large-scale building houses, warehouse workshops, tower buildings, weight lifting, sliding formwork intermittent propulsion, bridge and tunnel pushing, large containers and ships, sleepers, bridge support replacement, bridge and building reinforcement, steel bar engineering, antimagnetic and anticorrosive engineering (fiber anchors), carbon fiber reinforcement, pretensioned beam field construction, in-vitro prestressed engineering, stay cables, suspension cables and the like, and the existing prestressed anchorage device has the defects that the clamping of steel strands applying pretension stress is not firm enough, and the pretension loss on the steel strands is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a round anchor subassembly to solve current prestressed anchorage utensil and to the not firm problem of centre gripping of steel strand wires inadequately.

The purpose of the utility model is realized through the following technical scheme: a round anchor assembly comprises a cylindrical round anchor and a fastener used for clamping a steel strand, wherein a first through hole is formed in the round anchor along the axial lead direction of the round anchor, and the fastener is tightly matched in the first through hole.

Preferably, the fastener is a tapered cylinder with two open ends formed by a plurality of arc-shaped steel plates, the first through holes are in a tapered cylinder shape, and the taper of the fastener is equal to that of the first through holes.

Preferably, the outer wall of the large end of the fastener is provided with a clamping groove along the circumferential direction, and the elastic rubber ring is clamped on the groove bottom of the clamping groove.

Preferably, the inner wall of the fastener is provided with threads, the number of the first through holes is a plurality, and the first through holes are uniformly distributed around the axial lead of the round anchor.

Preferably, the first through holes are a plurality of, and along the radial at least one circle that distributes of circle anchor, seted up a plurality of screw thread through-holes on the circle anchor, and along the radial number of turns that distributes of circle anchor equals the number of turns of first through-hole, with the round first through holes with screw thread through-hole interval distribution, the bolt is screwed in the screw thread through-hole.

Preferably, the first through hole comprises a clamping section and a limiting section, the diameter of the limiting section is smaller than that of the clamping section, a chamfer is arranged at a port of the clamping section, which is far away from the limiting section, the fastening piece is a cylinder with a notch formed by a steel plate ring, and the fastening piece is positioned in the clamping section of the first through hole.

Preferably, the fastener is provided with a thread on an inner wall thereof.

Compared with the prior art, the beneficial effects of the utility model are that: the fastener clamped on the steel strand is arranged in the first through hole, the steel strand deforms after tensile stress is applied to the steel strand, and the fastener is clamped in the first through hole so as to prevent the steel strand from resetting and reduce the damage of the tensile stress on the steel strand.

Drawings

Fig. 1 is a first schematic view of the installation structure of the present invention;

fig. 2 is a schematic view of a mounting structure of the present invention;

fig. 3 is a first schematic structural diagram of the present invention;

FIG. 4 is a second schematic structural view of the present invention;

FIG. 5 is a first schematic structural view of a fastener;

FIG. 6 is a second schematic structural view of the fastener;

in the figure, 1-round anchor, 2-fastener, 3-first through hole, 4-steel strand, 5-hoop groove, 6-elastic rubber ring, 7-threaded through hole, 8-bolt, 9-anchor backing plate, 10-corrugated pipe, 11-concrete piece, 12-grouting hole, and 13-spiral rib.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

Example 1:

as shown in fig. 1 and 3, a round anchor assembly, including being cylindric round anchor 1 and fastener 2 that is used for centre gripping steel strand wires 4, first through-hole 3 has been seted up along its axial lead direction on the round anchor 1, fastener 2 tight fit is in first through-hole 3, fastener 2 is preferably by the open awl section of thick bamboo in both ends that a plurality of arc steel sheets formed, and the wall thickness of the awl section of thick bamboo that the arc steel sheet formed is by the tip to tip tapering gradually, first through-hole 3 is the awl tube-shape, the tapering of fastener 2 equals the tapering of first through-hole 3.

The utility model discloses an installation and theory of operation as follows: the corrugated pipe 10 penetrates through two ends of a concrete part 11, anchor backing plates 9 are installed at two ends of the corrugated pipe 10, round anchors 1 are installed on the anchor backing plates 9, steel strands 4 penetrate through corresponding first through holes 3 on the round anchors 1 at the two ends, then the steel strands 4 are pulled in opposite directions by using jacks at the two ends simultaneously, the anchor backing plates 9 at the two ends are abutted against the anchor backing plates 9 when the steel strands 4 are pulled out, so that prestress is applied to the concrete part 11, when the applied prestress reaches the standard, a fastener 2 is pushed into the first through holes 3, so that the steel strands 4 are in a tight state to keep the prestress on a concrete prefabricated part, the anchor backing plates 9 are embedded into concrete, spiral ribs 13 are installed on the surface, the other ends of the spiral ribs 13 are abutted against a steel reinforcement framework in the concrete part to provide a jacking force for the anchor backing plates 9, and the end faces of the concrete part are prevented from being crushed by the anchor backing plates 9, because fastener 2 cooperates with the cone cylindric of first through-hole 3, firm centre gripping steel strand wires 4, adaptation force is applyed and is accomplished the back and pass through grouting hole 12 on the anchor backing plate 9 and to concrete piece 11 slip casting, fills the clearance between concrete piece 11 and the bellows 10, makes concrete piece 11 more closely knit, and bellows 10 tightens the headspace for steel strand wires 4, when having prevented the steel strand wires 4 that imbeds concrete piece 11 from tightening, makes concrete piece 11 produce the crackle.

In this embodiment, as shown in fig. 1 and 5, a tightening groove 5 is formed on the outer wall of the large end of the fastening member 2 along the circumferential direction thereof, and an elastic rubber ring 6 is tightened on the bottom of the tightening groove 5, so that the size of the opening of the fastening member 2 can be conveniently adjusted to clamp the steel strand 4 within a certain size range.

In this embodiment, as shown in fig. 1 and 5, a thread is provided on the inner wall of the fastening member 2, the first through holes 3 are a plurality of, the first through holes 3 are uniformly distributed around the axial lead of the round anchor 1, the thread increases the mechanical engaging force between the fastening member 2 and the steel strand 4, so that the clamping is firmer, and the uniformly distributed first through holes 3 avoid uneven stress on the round anchor 1, which leads to serious local damage and affects the service life of the round anchor.

Example 2:

as shown in fig. 2 and 4, a round anchor assembly, including being cylindric round anchor 1 and fastener 2 that is used for centre gripping steel strand wires 4, round anchor 1 is gone up and has been seted up first through-hole 3 along its axial lead direction, fastener 2 tight fit is in first through-hole 3, preferably first through-hole 3 is a plurality of, and along the radial at least round that distributes of round anchor 1, round anchor 1 has seted up a plurality of screw through-hole 7, and the number of turns that radially distributes along round anchor 1 equals the number of turns of first through-hole 3, the first through-hole 3 and the screw through-hole 7 interval distribution of same round, bolt 8 is twisted in screw through-hole 7.

The utility model discloses an installation lies in with embodiment 1's difference, behind fastener 2 pushes first through-hole 3, twists screw thread through-hole 7 with bolt 8 again, because fastener 2 and 3 tight fittings of first through-hole, so behind fastener 2 pushes first through-hole 3, slight bulging deformation can take place for first through-hole 3, and twist screw thread through-hole 7 with bolt 8 after, under the tight effect that rises of bolt 8, thereby make 3 shrink firm centre gripping fasteners 2 of first through-hole.

In this embodiment, as shown in fig. 2 and 6, first through-hole 3 comprises clamping section and spacing section, the diameter of spacing section is less than the diameter of clamping section, the port that clamping section kept away from spacing section is provided with the chamfer, the chamfer makes things convenient for pushing of fastener 2, fastener 2 is by the steel sheet circle formation drum that has the breach, take place the shrink when fastener 2 pushes clamping section, thereby press from both sides tight steel strand wires 4, fastener 2 is located the clamping section of first through-hole 3, spacing section has prevented fastener 2 from being pulled out first through-hole 3.

In this embodiment, as shown in fig. 2 and 6, the inner wall of the fastening member 2 is provided with a thread, and the thread increases the mechanical engagement force between the fastening member 2 and the steel strand 4, so that the clamping is firmer.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a round anchor subassembly, is including being cylindric round anchor and the fastener that is used for centre gripping steel strand wires, its characterized in that: the round anchor is provided with a first through hole along the axial lead direction, the first through hole is composed of a clamping section and a limiting section, the diameter of the limiting section is smaller than that of the clamping section, the fastening piece is a cylinder with a notch formed by a steel plate ring, and the fastening piece is tightly matched in the clamping section of the first through hole.

2. A round anchor assembly as defined in claim 1, wherein: the first through hole is a plurality of, and follows the radial at least round that distributes of circle anchor, a plurality of screw thread through-holes have been seted up on the circle anchor, and follow the radial number of turns that distributes of circle anchor equals the number of turns of first through hole, with the round first through hole with screw thread through-hole interval distribution, the bolt is twisted in the screw thread through-hole.

3. A round anchor assembly as claimed in claim 1 or 2, wherein: and a chamfer is arranged at the port of the clamping section far away from the limiting section.

4. A round anchor assembly as defined in claim 3, wherein: and the inner wall of the fastener is provided with threads.